CN117357305B - Artificial blood vessel fixing device - Google Patents
Artificial blood vessel fixing device Download PDFInfo
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- CN117357305B CN117357305B CN202311675729.4A CN202311675729A CN117357305B CN 117357305 B CN117357305 B CN 117357305B CN 202311675729 A CN202311675729 A CN 202311675729A CN 117357305 B CN117357305 B CN 117357305B
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- 210000004204 blood vessel Anatomy 0.000 title claims abstract description 92
- 239000002473 artificial blood Substances 0.000 title claims abstract description 67
- 230000006835 compression Effects 0.000 claims abstract description 4
- 238000007906 compression Methods 0.000 claims abstract description 4
- 230000002792 vascular Effects 0.000 claims description 10
- 238000009941 weaving Methods 0.000 claims 1
- 239000008280 blood Substances 0.000 description 6
- 210000004369 blood Anatomy 0.000 description 6
- 206010023230 Joint stiffness Diseases 0.000 description 3
- 206010053649 Vascular rupture Diseases 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000004393 prognosis Methods 0.000 description 2
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 1
- 230000036770 blood supply Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
- A61F2/06—Blood vessels
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/04—Surgical instruments, devices or methods, e.g. tourniquets for suturing wounds; Holders or packages for needles or suture materials
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- Transplantation (AREA)
- Vascular Medicine (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Cardiology (AREA)
- Pulmonology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Gastroenterology & Hepatology (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Prostheses (AREA)
Abstract
The invention provides an artificial blood vessel fixing device, which relates to the field of medical appliances and comprises a long cylindrical elastic support, a split type backseat, a conveying rod and a release wire made of hard wires; the split type backseat is in a ring shape as a whole and is formed by detachably splicing at least two sections of arc-shaped ring-shaped split structures; the conveying rod extends along the axial direction of the whole split rear seat, and is fixedly connected to any section of split structure; an axial threading hole is arranged on the side wall of the split type backseat; in the loading state, the long cylindrical elastic support is arranged in front of the split rear seat; the release wire passes through the axial threading hole, and the part of the release wire, which is positioned in front of the split backseat, circumferentially constrains the long cylindrical elastic support, so that the long cylindrical elastic support is in a radial compression state. The invention relieves the technical problems that at least one end of the artificial blood vessel needs to be sutured with the broken end of the blood vessel of the patient, and the artificial blood vessel is limited by the structure and the length of the conveying mode of the existing conveyor and cannot be operated in the operation.
Description
Technical Field
The invention relates to the technical field of medical appliances, in particular to an artificial blood vessel fixing device.
Background
In the prior art, in order to alleviate the problems that the operation is inconvenient, the suture efficiency is low, blood leakage is easy to occur at suture points and the like, when the traditional connection of the artificial blood vessel and the broken end of the patient autologous blood vessel is released, two ends of the artificial blood vessel are respectively connected with the patient autologous blood vessel in a suture mode, and research personnel develop the suture-free artificial blood vessel to carry out related operation application.
The structure of the existing suture-free artificial blood vessel is generally that a covered stent section is sutured at one end of the artificial blood vessel, one end of the covered stent section is connected with one broken end of the patient autologous blood vessel through a covered stent supporting blood vessel, and the other end of the covered stent section is still connected with the other broken end of the patient autologous blood vessel through a suture mode.
The connection between the artificial blood vessel and the broken end of the blood vessel of the patient must be achieved at least at one end by means of an intraoperative suture by a doctor, and the following exist: the technical requirements on operators are high, the small suture density can cause the blood leakage at the joint position, the large suture density can cause the vascular rupture of the patient, the suture process can prolong the operation time and the like;
in addition, the conveyer used in the operation is generally used for conveying the artificial blood vessel with the covered stent at one end: the conveyer passes through the artificial blood vessel opening and enters the inside of the covered stent, the covered stent is fixed on the conveyer in a compressed mode, the outside of the covered stent is bound by the compressed film sleeve, the covered stent is released by releasing the film sleeve in the releasing process, and then the conveyer is withdrawn from the covered stent and the inside of the artificial blood vessel. The presence is: the conveyer needs to penetrate through the interior of the artificial blood vessel, so that the length of the artificial blood vessel is limited, the artificial blood vessel can be applied only when the interval between two broken ends of the blood vessel of a patient is smaller, the common artificial blood vessel with the end part without the covered stent is still required to be connected into the artificial blood vessel by means of two ends being respectively sutured when the interval is larger, and the conveyer and the covered stent are assembled before operation, so that the problems of operation in operation, limited operation flexibility and the like are solved.
Disclosure of Invention
The invention aims to provide an artificial blood vessel fixing device for alleviating the technical problems in the prior art.
In order to achieve the above purpose, the embodiment of the present invention adopts the following technical scheme:
the embodiment of the invention provides an artificial blood vessel fixing device, which comprises a long cylindrical elastic support, a split backseat, a conveying rod and a release wire made of hard wires;
the split rear seat is integrally annular and is formed by detachably splicing at least two sections of arc-shaped annular split structures; the conveying rod extends along the axial direction of the whole split rear seat, and is fixedly connected to any section of the split structure, the front end of the conveying rod extends to the front of the split rear seat, and the rear end of the conveying rod extends to the rear of the split rear seat;
an axial threading hole is formed in the side wall of the split rear seat; in the loading state, the long cylindrical elastic support is arranged in front of the split rear seat; the release wire passes through the axial threading hole, and the part of the release wire, which is positioned in front of the split backseat, circumferentially constrains the long cylindrical elastic support, so that the long cylindrical elastic support is in a radial compression state.
By using the artificial blood vessel fixing device provided by the embodiment, the artificial blood vessel is fixed between the two broken ends of the autologous blood vessel of the patient, the technical problems that at least one end of the artificial blood vessel needs to be sutured with the broken end of the blood vessel of the patient in the prior art, the artificial blood vessel is limited by the structure of the existing conveyor, the length of the conveying mode is limited, the operation in the operation cannot be performed and the like are solved, and the following beneficial effects can be achieved at least:
(1) The butt joint between the two broken ends of the artificial blood vessel and the patient autologous blood vessel is supported and fixed through the long cylindrical elastic support, the two ends are fixed in a sewing-free manner, the operation is simple, and the operation time is saved to the greatest extent; meanwhile, the problems that when at least one end is fixed by suturing, the blood leakage at the joint position is caused by small suturing density, and the vascular rupture of a patient is caused by large suturing density are avoided, and the butt joint tightness and the prognosis of the patient are better;
(2) The operation can be performed in the operation, the preoperative assembly is not needed, and the operation flexibility is higher;
(3) During operation, the artificial blood vessel passes through the long cylindrical elastic support without a conveyer, so that the length of the artificial blood vessel is unlimited, and the condition that the interval between two broken ends of the blood vessel of a patient is larger or smaller can be applied, and the application range is wider;
(4) The long tubular elastic support does not need to be sutured with an artificial blood vessel, the problem of blood leakage at the suture point can not occur at the seamless point, and the tightness is better.
The manner of use and specific effect explanation of this embodiment can be obtained with reference to the following specific embodiments.
In an alternative implementation manner of this embodiment, preferably, the peripheral surface of the long cylindrical elastic support is connected with a plurality of wire loops, and the axial direction of the long cylindrical elastic support is taken as the longitudinal direction, and in a self-expansion state that the long cylindrical elastic support is not circumferentially restrained, the wire loops are arranged into at least two rows, and every two adjacent rows of wire loops are staggered with each other in the circumferential direction of the long cylindrical elastic support;
the release wires sequentially penetrate through two adjacent rows of wire through rings in an staggered manner along the axial direction so as to pull in the corresponding two rows of wire through rings, and further circumferentially restrain the long cylindrical elastic support.
Further preferably, the wire loops are arranged in four rows, two adjacent rows are used as a first group of wire loops, and two other adjacent rows are used as a second group of wire loops, and the first group of wire loops and the second group of wire loops are symmetrically arranged on two side surfaces of the long cylindrical elastic support relative to the central axis of the long cylindrical elastic support;
the release wire includes a first release wire passing through the first set of wire loops, and a second release wire passing through the second set of wire loops;
and two axial threading holes corresponding to the first release wires and the second release wires one by one are formed in the split type backseat.
Preferably, the rear end of the release wire is connected with a release wire pull ring.
In addition, in an alternative implementation manner of this embodiment, it is preferable that the split structure fixedly connected to the conveying rod is a fixed back seat: the fixed backseat is provided with a conveying rod mounting hole which axially penetrates through the side wall of the fixed backseat, and the conveying rod penetrates through and is fixedly connected with the conveying rod mounting hole.
In an alternative implementation manner of this embodiment, preferably, an operation handle is connected to the rear end of the conveying rod.
In an alternative implementation of this embodiment, it is more preferred that the delivery rod is plastically deformable.
Preferably, the rear end of the conveying rod is positioned at the rear end of the split rear seat and is prefabricated: and the inclined linear structure gradually moves away from the integral central axis of the split rear seat in the radial direction from the front end to the rear end.
In an alternative implementation manner of this embodiment, it is preferable that the long cylindrical elastic support is a mesh support woven by wires.
In an optional implementation manner of this embodiment, in the split-type backseat, two adjacent split structures are buckled and connected through a concave-convex structure; and/or a split seat stay wire is connected to a split structure which is not connected with the conveying rod.
In particular, in the context of the present invention, the foregoing "and/or" means "and/or" preceding structures are either simultaneously or alternatively arranged with "and/or" following structures.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of an assembly structure of an artificial blood vessel fixing device according to an embodiment of the present invention;
fig. 2 is a schematic view of the overall structure of a long cylindrical elastic stent in a self-expanding state in the vascular prosthesis fixing device according to the embodiment of the present invention;
fig. 3 is a schematic view of the overall structure of a long cylindrical elastic stent in a radially compressed state in the vascular prosthesis fixing device according to the embodiment of the present invention;
FIG. 4 is a diagram showing a structure of an artificial blood vessel fixing device according to an embodiment of the present invention, wherein the artificial blood vessel fixing device is in a split state with a split back seat;
FIG. 5 is a schematic view showing a first step of delivering an artificial blood vessel using an artificial blood vessel fixing device according to an embodiment of the present invention;
FIG. 6 is a schematic view showing a second step of delivering an artificial blood vessel using the artificial blood vessel fixing device according to the embodiment of the present invention;
FIG. 7 is an isometric view of the partial structure of FIG. 6;
fig. 8 is a schematic diagram of the end structure of an artificial blood vessel when the circumferential constraint of a release wire on a long cylindrical elastic stent is released and the long cylindrical elastic stent is clamped between two layers of artificial blood vessels.
Icon: 100-artificial blood vessel; 1-a long cylindrical elastic support; 11-threading a wire loop; 111-a first set of wire loops; 112-a second set of wire loops; 2-split backseat; 201-an axial threading hole; 202-concave-convex structure; 3-a conveying rod; 31-an operating handle; 4-releasing the wire; 40-releasing the wire pull ring; 41-a first release wire; 42-a second release wire.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters designate like items in the drawings, and thus once an item is defined in one drawing, no further definition or explanation thereof is necessary in the subsequent drawings.
In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "proximal", "distal", "front", "rear", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
In particular, in the present invention, the end of the medical device close to the operator is the proximal end of the medical device during surgery, and the end of the medical device entering the blood vessel of the patient is the distal end of the medical device (the front end of the medical device is the distal end, and the rear end of the medical device is the proximal end).
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Some embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following embodiments and features of the embodiments may be combined with each other without conflict.
The present embodiment provides an artificial blood vessel fixing device, referring to fig. 1 to 4, which includes a long cylindrical elastic stent 1, a split backseat 2, a delivery rod 3, and a release wire 4 made of hard wire. Wherein: the split type backseat 2 is in an annular shape as a whole and is formed by detachably splicing at least two sections of arc-shaped annular split structures. The conveying rod 3 extends along the axial direction of the whole split rear seat 2, the conveying rod 3 is fixedly connected to any section of split structure, the front end of the conveying rod 3 extends to the front of the split rear seat 2, and the rear end of the conveying rod 3 extends to the rear of the split rear seat 2.
As shown in fig. 4, an axial threading hole 201 is arranged on the side wall of the split rear seat 2; in the loading state, referring to fig. 1 to 3, the long cylindrical elastic support 1 is provided in front of the split rear seat 2; the release wire 4 passes through the axial threading hole 201, and the part of the release wire 4, which is positioned in front of the split rear seat 2, circumferentially constrains the long cylindrical elastic support 1, so that the long cylindrical elastic support 1 is in a radially compressed state, and the rear end surface of the long cylindrical elastic support 1 is abutted against the front end surface of the split rear seat 2.
The artificial blood vessel fixing device provided in this embodiment is applied in an open operation for fixing an artificial blood vessel between two broken ends of a patient blood vessel, so as to quickly recover the blood supply of a damaged section of the patient autologous blood vessel, and the specific application mode thereof can be referred to fig. 5 to 8:
first, as shown in fig. 5, a first end of the artificial blood vessel 100 in the axial direction is inserted into the long cylindrical elastic support 1 through the middle ring of the split backseat 2 until the first end of the artificial blood vessel 100 passes out of the front end of the long cylindrical elastic support 1 for a part of the length;
second, as shown in fig. 6 and 7, the part of the first end of the artificial blood vessel 100 that passes out of the front end of the long cylindrical elastic support 1 is turned back, so that the part of the first end of the artificial blood vessel 100 that passes out of the back and forth turn over covers the outer circumferential surface of the long cylindrical elastic support 1, and the part of the long cylindrical elastic support 1 that exposes the split back seat 2 is clamped between the two layers of artificial blood vessels 100;
then, the first end of the artificial blood vessel 100 is put into a broken end of the patient's autologous blood vessel, the rear end of the release wire 4 is withdrawn, so that the circumferential constraint of the release wire 4 on the long cylindrical elastic support 1 is released, the long cylindrical elastic support 1 is self-expanded, the end structure of the first end of the artificial blood vessel 100 is shown in fig. 8, and the first end of the artificial blood vessel 100 is further fixed on the inner wall of the broken end of the patient's autologous blood vessel;
step three, separating the split structures of the split type backseat 2, and taking out the split type backseat 2 and the conveying rod 3;
fourth, repeating the first to third steps for the second end of the artificial blood vessel 100, fixing the second end of the artificial blood vessel 100 on the inner wall of the other broken end of the patient's own blood vessel, and taking out the split backseat 2 and the conveying rod 3, thereby completing the open operation of fixing the artificial blood vessel between the two broken ends of the patient's blood vessel.
By using the artificial blood vessel fixing device provided by the embodiment, the artificial blood vessel is fixed between the two broken ends of the autologous blood vessel of the patient, the technical problems that at least one end of the artificial blood vessel needs to be sutured with the broken end of the blood vessel of the patient in the prior art, the artificial blood vessel is limited by the structure of the existing conveyor, the length of the conveying mode is limited, the operation in the operation cannot be performed and the like are solved, and the following beneficial effects can be achieved at least:
(1) The butt joint between the two broken ends of the artificial blood vessel and the patient autologous blood vessel is supported and fixed through the long cylindrical elastic support 1, the two ends are fixed in a sewing-free manner, the operation is simple, and the operation time is saved to the greatest extent; meanwhile, the problems that when at least one end is fixed by suturing, the blood leakage at the joint position is caused by small suturing density, and the vascular rupture of a patient is caused by large suturing density are avoided, and the butt joint tightness and the prognosis of the patient are better;
(2) The operation can be performed in the operation, the preoperative assembly is not needed, and the operation flexibility is higher;
(3) During operation, the artificial blood vessel passes through the long cylindrical elastic support 1 without a conveyer, so that the length of the artificial blood vessel is unlimited, and the condition that the interval between two broken ends of the blood vessel of a patient is larger or smaller can be applied, and the application range is wider;
(4) The long tubular elastic support 1 does not need to be sutured with the artificial blood vessel 100, the problem of blood leakage at the suture point can not occur at the seamless point, and the tightness is better.
In this embodiment, the specific implementation manner of "the release wire 4 circumferentially constrains the long cylindrical elastic stent 1 to make the long cylindrical elastic stent 1 in a radially compressed state" is various, including but not limited to:
as shown in fig. 1 to 3, a plurality of wire loops 11 are provided on the circumferential surface of the long cylindrical elastic stent 1, and the axial direction of the long cylindrical elastic stent 1 is taken as the longitudinal direction, then, as shown in fig. 2, in a self-expansion state in which the long cylindrical elastic stent 1 is not circumferentially restrained, the wire loops 11 are arranged in at least two rows, and each two adjacent rows of wire loops 11 are staggered with each other in the circumferential direction of the long cylindrical elastic stent 1; as shown in fig. 3, the release wires 4 sequentially cross through two adjacent rows of wire loops 11 along the axial direction to pull the corresponding two rows of wire loops 11 closer together, so as to circumferentially constrain the long cylindrical elastic support 1, and the release wires 4 are made of hard wires, so that the circumferentially constrained state can be maintained when the release wires 4 are not withdrawn.
The circumferential constraint of the release wire 4 on the long cylindrical elastic support 1 is released in the following manner: the rear end of the release wire 4 is withdrawn until the release wire 4 is withdrawn.
Wherein, the arrangement of the at least two rows of wire loops 11 on the circumferential surface of the long cylindrical elastic support 1 includes a serpentine arrangement, and the like, wherein, preferably, referring to fig. 2, 3 and 5, four rows of wire loops 11 are provided, two adjacent rows are taken as a first group of wire loops 111, two other adjacent rows are taken as a second group of wire loops 112, and the first group of wire loops 111 and the second group of wire loops 112 are symmetrically arranged on two sides of the long cylindrical elastic support 1 relative to the central axis of the long cylindrical elastic support 1; the release wire 4 comprises a first release wire 41 passing through the first wire loops 111 and a second release wire 42 passing through the second wire loops 112, and two axial wire holes 201 corresponding to the first release wire 41 and the second release wire 42 one by one are arranged on the split rear seat 2.
In addition, in order to further identify the rear end position of the release wire 4 for quick operation, it is preferable that a release wire pull ring 40 is connected to the rear end of the release wire 4, and when there are a first release wire 41 and a second release wire 42, the rear ends of the first release wire 41 and the second release wire 42 may be connected to the same release wire pull ring 40 for easy operation to withdraw the first release wire 41 and the second release wire 42 simultaneously.
In order to facilitate manufacturing, according to different lengths of the long cylindrical elastic support 1 when being radially compressed, the length of the conveying rod 3 extending forward relative to the split rear seat 2 is adjusted, so as to ensure that the length of the conveying rod 3 extending forward relative to the split rear seat 2 is close to the length of the long cylindrical elastic support 1 when being radially compressed, and with continued reference to fig. 1 to 4, in an alternative implementation of this embodiment, it is preferable to use a split structure fixedly connected with the conveying rod 3 as a fixed rear seat: the fixed backseat is provided with a conveying rod mounting hole which axially penetrates through the side wall of the fixed backseat, and the conveying rod 3 penetrates through and is fixedly connected to the conveying rod mounting hole, wherein the fixed connection mode comprises but is not limited to interference fit connection or bonding and other modes.
In addition, for convenience of regulation, it is preferable that an operation handle 31 is connected to the rear end of the conveying rod 3 as shown in fig. 1, 5 and 6.
In this embodiment, in order to facilitate the multi-angle implantation of the artificial blood vessel during the operation, it is preferable to make the delivery rod 3 capable of plastic deformation, for example, but not limited to, directly making the delivery rod 3 from a bendable and deformable metal rod, or making the delivery rod 3 comprise a soft outer sleeve and an adjustable bent wire structure penetrating inside the soft outer sleeve.
In some alternative implementations of the present embodiment, it is preferable to preform the rear end of the conveying rod 3 at the rear end of the split rear seat 2: the inclined linear structure gradually moves away from the integral central axis of the split rear seat 2 in the radial direction from the front end to the rear end of the inclined linear structure so as to avoid the rear end of the conveying rod 3 interfering with the penetrating step of the end part of the artificial blood vessel 100 into the split rear seat 2.
In this embodiment, the long cylindrical elastic stent 1 is preferably a mesh stent woven from wires, and the stent structure has high elasticity and small radial compression volume.
In addition, as shown in fig. 4, in the present embodiment, preferably, in the split rear seat 2, two adjacent split structures are buckled and connected by a concave-convex structure 202 including a butting slot and a butting convex column; and/or, in the split rear seat 2, a split seat pull wire (not shown) is connected to a split structure which is not connected to the conveying rod 3, and a split seat pull ring may be further connected to the rear end of the split seat pull wire to rapidly separate the split rear seat 2.
In addition, the artificial blood vessel fixing device provided by the embodiment can be matched with the elastic suture-free buckling belt for use, and after two ends of the artificial blood vessel are respectively implanted into two broken ends of the patient's autologous blood vessel, the elastic suture-free buckling belt is utilized to wrap the outer parts of the two broken ends of the patient's autologous blood vessel, so that the butt joint tightness of the broken ends is further improved.
Finally, it should be noted that:
1. in the present specification, "and/or" means "and/or" preceding structure is provided simultaneously or alternatively with "and/or" following structure;
2. in the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described by differences from other embodiments, and identical and similar parts between the embodiments are only required to be seen with each other; the above embodiments in the present specification are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (9)
1. An artificial blood vessel fixing device, which is characterized in that: comprises a long cylindrical elastic support (1), a split rear seat (2), a conveying rod (3) and a release wire (4) made of hard wires;
the split rear seat (2) is integrally annular and is formed by detachably splicing at least two sections of arc-shaped annular split structures; the conveying rod (3) extends along the axial direction of the whole split rear seat (2), the conveying rod (3) is fixedly connected to any section of split structure, the front end of the conveying rod (3) extends to the front of the split rear seat (2), and the rear end of the conveying rod (3) extends to the rear of the split rear seat (2);
an axial threading hole (201) is formed in the side wall of the split rear seat (2); in the loading state, the long cylindrical elastic support (1) is arranged in front of the split rear seat (2); the release wire (4) passes through the axial threading hole (201), and the part of the release wire (4) positioned in front of the split rear seat (2) circumferentially restrains the long cylindrical elastic support (1) so that the long cylindrical elastic support (1) is in a radial compression state;
wherein: the circumference of the long cylindrical elastic support (1) is connected with a plurality of wire loops (11), and the axial direction of the long cylindrical elastic support (1) is taken as the longitudinal direction, so that in a self-expansion state that the long cylindrical elastic support (1) is not circumferentially restrained, the wire loops (11) are arranged into at least two rows, and every two adjacent rows of wire loops (11) are mutually staggered in the circumferential direction of the long cylindrical elastic support (1); the release wires (4) sequentially penetrate through two adjacent rows of wire through rings (11) in an staggered manner along the axial direction so as to pull in the corresponding two rows of wire through rings (11), and further circumferentially restrain the long cylindrical elastic support (1).
2. The vascular prosthesis fixation device of claim 1, wherein: the wire loops (11) are arranged in four rows, two adjacent rows are used as a first group of wire loops (111), the other two adjacent rows are used as a second group of wire loops (112), and the first group of wire loops (111) and the second group of wire loops (112) are symmetrically arranged on two side surfaces of the long cylindrical elastic support (1) relative to the central axis of the long cylindrical elastic support (1);
the release wire (4) comprises a first release wire (41) passing through the first set of wire loops (111) and a second release wire (42) passing through the second set of wire loops (112);
two axial threading holes (201) which are in one-to-one correspondence with the first release wire (41) and the second release wire (42) are formed in the split rear seat (2).
3. The vascular prosthesis fixation device of claim 1, wherein: the rear end of the release wire (4) is connected with a release wire pull ring (40).
4. The vascular prosthesis fixation device of claim 1, wherein: the split structure fixedly connected with the conveying rod (3) is used as a fixed rear seat:
the fixed backseat is provided with a conveying rod mounting hole which axially penetrates through the side wall of the fixed backseat, and the conveying rod (3) penetrates through and is fixedly connected to the conveying rod mounting hole.
5. The vascular prosthesis fixation device of claim 1, wherein: the rear end of the conveying rod (3) is connected with an operating handle (31).
6. The vascular prosthesis fixation device of claim 1, wherein: the conveying rod (3) can be plastically deformed.
7. The vascular prosthesis fixation device of claim 1, wherein: the rear end of the conveying rod (3) is positioned at the rear end of the split rear seat (2) and is prefabricated: and the inclined linear structure gradually moves away from the integral central axis of the split rear seat (2) in the radial direction from the front end to the rear end.
8. The vascular prosthesis fixation device of claim 1, wherein: the long cylindrical elastic support (1) is a grid support formed by weaving wires.
9. The vascular prosthesis fixation device of claim 1, wherein: in the split rear seat (2):
two adjacent split structures are buckled and connected through a concave-convex structure (202); and/or a split seat stay wire is connected to a split structure which is not connected with the conveying rod (3).
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| CN202311675729.4A CN117357305B (en) | 2023-12-08 | 2023-12-08 | Artificial blood vessel fixing device |
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| CN202311675729.4A CN117357305B (en) | 2023-12-08 | 2023-12-08 | Artificial blood vessel fixing device |
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| CN117357305B true CN117357305B (en) | 2024-03-19 |
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| CN117357305A (en) | 2024-01-09 |
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